docs: def _render_having(having_conditions):
      """Render the having part of a query.
  
      Parameters
      ----------
      having_conditions : list
          A ``list`` of ``dict``s to filter the rows
  
      Returns
      -------
      str
          A string that represents the "having" part of a query.
  
      See Also
      --------
      render_query : Further clarification of `conditions` formatting.
      """
      if not having_conditions:
          return ""
  
      rendered_conditions = []
  
      for condition in having_conditions:
          field = condition.get('field')
          field_type = condition.get('type')
          comparators = condition.get('comparators')
  
          if None in (field, field_type, comparators) or not comparators:
              logger.warn('Invalid condition passed in: %s' % condition)
              continue
  
          rendered_conditions.append(
              _render_condition(field, field_type, comparators))
  
      if not rendered_conditions:
          return ""
  
      return "HAVING %s" % (" AND ".join(rendered_conditions))